Home / 20,156.24-27,752.08-18,287.89

Finding the Fourth Proportional to 20,156.24, 27,752.08 and 18,287.89

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Solution

The fourth proportional to 20,156.24, 27,752.08 and 18,287.89 is: 25,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.24 : 27,752.08 = 18,287.89 : x
  2. Step 2: Convert to fraction form
    20,156.24/27,752.08 = 18,287.89/x
  3. Step 3: Cross multiply
    20,156.24x = 27,752.08 × 18,287.89
  4. Step 4: Simplify right side
    20,156.24x = 507,526,871.21
  5. Step 5: Solve for x
    x = 507,526,871.21/20,156.24
  6. Step 6: Final answer
    x = 25,179.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.